pindexpolyene./pol-ee-een/US // ˈpɒl iˌin //UK // (ˈpɒlɪˌiːn) //多烯,聚烯,聚烯烃,多烯类Definitionsn.noun · 名词1. Chemistry.›a hydrocarbon containing two or more double bonds, often conjugated.Level 4More words in p →